Published online by Cambridge University Press: 16 June 2009
Momentary time sampling (MTS) is an unbiased method of estimating the duration of time for which a behaviour occurs, unlike partial interval recording (PIR) which introduces bias. This lack of bias does not, however, permit the researcher to make the further assumption that MTS allows multiple behaviours to be monitored accurately or in a way that is sensitive to behaviour change. Further considerations of the use of MTS and PIR are discussed.
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